package study.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.IdWorker;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.GetMapping;
import study.reggie.common.BaseContext;
import study.reggie.common.CustomException;
import study.reggie.common.R;
import study.reggie.dao.OrdersDao;
import study.reggie.dto.OrdersDto;
import study.reggie.pojo.*;
import study.reggie.service.*;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;

@Service
public class OrdersServiceImpl extends ServiceImpl<OrdersDao, Orders> implements OrdersService {

    @Autowired
    private ShoppingCartService shoppingCartService;

    @Autowired
    private UserService userService;

    @Autowired
    private AddressBookService addressBookService;

    @Autowired
    private OrderDetailService orderDetailService;

    /*
    * 用户下单
    * */
    @Override
    public void submit(Orders orders) {

        //查询当前用户id(前端传送的只有购物车id、支付方式)
        Long currentId = BaseContext.getCurrentId();

        //查询当前用户购物车数据
        LambdaQueryWrapper<ShoppingCart> queryWrapper=new LambdaQueryWrapper<>();
        queryWrapper.eq(ShoppingCart::getUserId,currentId);
        List<ShoppingCart> list = shoppingCartService.list(queryWrapper);

        if(list==null||list.size()==0){
            throw new CustomException("购物车为空,不能下单!");
        }

        //查询用户数据
        User user = userService.getById(currentId);

        //查询地址数据
        Long addressBookId = orders.getAddressBookId();

        AddressBook addressBook = addressBookService.getById(addressBookId);
        if(addressBook==null){
            throw new CustomException("地址信息有误，不能下单");
        }

        AtomicInteger amount=new AtomicInteger(0);

        long orderId = IdWorker.getId();

        List<OrderDetail> orderDetails=list.stream().map((item)->{
            OrderDetail orderDetail=new OrderDetail();
            //订单号
            orderDetail.setOrderId(orderId);
            //菜品数量
            orderDetail.setNumber(item.getNumber());
            //订单菜品口味
            orderDetail.setDishFlavor(item.getDishFlavor());
            //订单菜品id
            orderDetail.setDishId(item.getDishId());
            //订单套餐id
            orderDetail.setSetmealId(item.getSetmealId());
            //订单菜品名称
            orderDetail.setName(item.getName());
            //订单菜品图片
            orderDetail.setImage(item.getImage());
            //订单金额
            orderDetail.setAmount(item.getAmount());
            amount.addAndGet(item.getAmount().multiply(new BigDecimal(item.getNumber())).intValue());
            return orderDetail;
        }).collect(Collectors.toList());


        //订单号
        orders.setNumber(String.valueOf(orderId));
        //订单id
        orders.setId(orderId);
        //下单时间
        orders.setOrderTime(LocalDateTime.now());
        //结账时间
        orders.setCheckoutTime(LocalDateTime.now());
        //订单状态
        orders.setStatus(2);
        //订单金额
        orders.setAmount(new BigDecimal(amount.get()));
        //用户id
        orders.setUserId(currentId);
        //商家姓名
        orders.setUserName(user.getName());
        //收货人姓名
        orders.setConsignee(addressBook.getConsignee());
        //收货人手机号
        orders.setPhone(addressBook.getPhone());
        //收货人地址
        orders.setAddress((addressBook.getProvinceName()==null?"":addressBook.getProvinceName())
                +(addressBook.getCityName() == null?"":addressBook.getCityName())
                +(addressBook.getDistrictName() == null?"":addressBook.getDistrictName())
                +(addressBook.getDetail() == null?"":addressBook.getDetail()));
        //向订单表中插入数据，一条数据
        this.save(orders);

        //向订单明细表中插入数据，多条数据
        orderDetailService.saveBatch(orderDetails);

        //清空购物车数据
        shoppingCartService.remove(queryWrapper);
    }


}
